2023ApJ...944...47G

Query : 2023ApJ...944...47G

2023ApJ...944...47G - Astrophys. J., 944, 47 (2023/February-2)

Untangling the Sources of Abundance Dispersion in Low-metallicity Stars.

GRIFFITH E.J., JOHNSON J.A., WEINBERG D.H., ILYIN I., JOHNSON J.W., RODRIGUEZ-MARTINEZ R. and STRASSMEIER K.G.

Abstract (from CDS):

We measure abundances of 12 elements (Na, Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni) in a sample of 86 metal-poor (-2 ≲ [Fe/H] ≲ -1) subgiant stars in the solar neighborhood. Abundances are derived from high-resolution spectra taken with the Potsdam Echelle Polarimetric and Spectroscopic Instrument on the Large Binocular Telescope, modeled using iSpec and MOOG. By carefully quantifying the impact of photon-noise (<0.05 dex for all elements), we robustly measure the intrinsic scatter of abundance ratios. At fixed [Fe/H], the rms intrinsic scatter in [X/Fe] ranges from 0.04 (Cr) to 0.16 dex (Na), with a median of 0.08 dex. Scatter in [X/Mg] is similar, and accounting for [α/Fe] only reduces the overall scatter moderately. We consider several possible origins of the intrinsic scatter with particular attention to fluctuations in the relative enrichment by core-collapse supernovae (CCSN) and Type Ia supernovae and stochastic sampling of the CCSN progenitor mass distribution. The stochastic sampling scenario provides a good quantitative explanation of our data if the effective number of CCSN contributing to the enrichment of a typical sample star is N ∼ 50. At the median metallicity of our sample, this interpretation implies that the CCSN ejecta are mixed over a gas mass ∼6 × 104M⊙ before forming stars. The scatter of elemental abundance ratios is a powerful diagnostic test for simulations of star formation, feedback, and gas mixing in the early phases of the Galaxy.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Abundance ratios - High resolution spectroscopy - Chemical enrichment - Supernovae

VizieR on-line data: <Available at CDS (J/ApJ/944/47): table1.dat table2.dat table3.dat>

Simbad objects: 101

goto Full paper

goto View the references in ADS

Number of rows : 101
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TYC 2263-1126-1 Pe* 00 02 14.2313754552 +32 28 18.982914636   12.61 11.85     ~ 1 0
2 TYC 1178-625-1 Pe* 00 09 14.0933155512 +17 28 20.983286712   12.30 11.47     ~ 2 0
3 TYC 2283-719-1 Pe* 00 38 33.1568350320 +34 33 11.401036128   13.23 12.25     ~ 1 0
4 UCAC4 606-002900 Pe* 01 05 11.6630864241 +31 03 56.758229345   13.111 12.413 12.356   ~ 1 0
5 TYC 30-1091-1 Pe* 01 59 17.9323843872 +02 12 08.063710740   12.56 12.07     ~ 2 0
6 UCAC4 652-008335 Pe* 02 12 01.3620686253 +40 13 13.588596987   13.049 12.391 12.224   ~ 1 0
7 2MASS J03004383+0218124 Pe* 03 00 43.8365754000 +02 18 12.480709284   12.73 12.61   12.40 kA3hA5mA7 4 0
8 TYC 71-622-1 Pe* 03 44 34.9816587840 +05 53 01.434851376   11.75 11.13     ~ 1 0
9 UCAC4 492-006643 * 04 16 34.4412649763 +08 12 44.320554560   12.999 12.082 11.978   ~ 1 0
10 TYC 2891-596-1 Pe* 04 21 04.8127034976 +44 44 45.555716436   11.58 10.91     ~ 1 0
11 TYC 4746-785-1 Pe* 04 31 54.1204674288 -06 32 10.163103252   11.890 11.310 11.04 10.443 ~ 17 0
12 HD 287261 PM* 04 57 23.2231212528 +13 38 53.480576580   11.51 11.04     G5 4 0
13 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
14 UCAC4 640-025490 * 05 24 09.2409093457 +37 50 37.615752335     12.200 12.025   ~ 1 0
15 HD 288100 Pe* 05 36 23.4330306768 +01 00 44.373511692   11.25 10.45     F5 5 0
16 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
17 Wolf 257 Pe* 06 02 33.6819963744 +45 02 07.609479684       10.8   ~ 3 0
18 TYC 1902-1006-1 Pe* 06 50 28.5995382203 +26 30 47.560636508   12.11 11.57     ~ 1 0
19 TYC 3390-2022-1 Pe* 06 53 51.8972735520 +46 05 51.701399196   12.52 11.37     ~ 1 0
20 TYC 3771-1185-1 Pe* 06 55 23.5556380488 +54 58 15.628327140   12.23 11.86     ~ 1 0
21 G 90-3 Pe* 07 29 50.8459373520 +32 51 58.309757856   11.0 10.4 10.2   sd:F8 81 0
22 BD+34 1693 Pe* 07 51 39.7845508656 +33 57 58.894594956   11.52 10.92     F8 8 0
23 UCAC4 498-049334 Pe* 07 56 13.9751131480 +09 30 26.710110469   13.011 12.332 12.176   ~ 2 0
24 UCAC4 561-045494 Pe* 08 04 44.2614306717 +22 10 28.853143517   13.026 12.461 12.343   ~ 4 0
25 UCAC4 463-040480 Pe* 08 09 04.0609643903 +02 25 20.565524104   12.723 12.057 11.972   ~ 2 0
26 UCAC4 499-050696 Pe* 08 32 38.5707941482 +09 40 40.733738554   13.014 12.240 12.145   ~ 1 0
27 TYC 1396-531-1 * 08 45 23.5844681256 +17 58 11.491361940   12.39 12.45     ~ 3 0
28 UCAC4 672-052408 Pe* 08 52 04.8499362379 +44 16 33.625824116   12.493 11.721 11.626   ~ 1 0
29 TYC 1404-461-1 Pe* 09 11 42.7799026632 +17 57 23.593416948   12.75 12.14     ~ 4 0
30 TYC 3430-366-1 Pe* 09 14 40.3170516168 +52 00 58.847819940   11.33 10.67     ~ 2 0
31 UCAC4 542-048284 PM* 09 38 02.7636206451 +18 17 05.431678676   12.920 12.339 12.229   ~ 1 0
32 TYC 1966-216-1 PM* 09 40 47.5079941080 +29 56 44.923138116   12.55 12.48     ~ 1 0
33 HD 84937 Pe* 09 48 56.0992891997 +13 44 39.326709913 8.49 8.68 8.32 7.97 7.70 F8Vm-5 831 0
34 BD+45 1799 Pe* 10 07 11.8894691616 +45 15 15.834043764       10.3   G0 13 0
35 BD+19 2303a Pe* 10 07 27.8520202080 +19 16 10.229500128   12.10 11.88     G2V 4 0
36 TYC 1975-75-1 SB* 10 21 20.7778289832 +29 02 54.860609292   13.05 12.34     ~ 2 0
37 TYC 3822-490-1 * 10 39 56.5468795152 +57 53 08.037170232   12.18 12.01     ~ 1 0
38 UCAC4 540-051196 Pe* 10 48 04.7476452960 +17 51 07.915443803   12.965 12.326 12.162   ~ 1 0
39 TYC 1435-489-1 Pe* 10 53 11.2753547904 +21 18 13.701158316   12.08 11.45     ~ 1 0
40 TYC 1429-330-1 Pe* 10 57 20.2998373680 +15 59 11.179687308   13.37 12.12     ~ 1 0
41 LSPM J1104+4901 Pe* 11 04 23.1178452984 +49 01 26.582942820       10.4   ~ 6 0
42 TYC 267-796-1 PM* 11 22 26.5072621800 +04 33 50.292825480   12.51 11.85 11.77   ~ 7 0
43 TYC 264-782-1 Pe* 11 25 01.8715312848 +01 45 03.094272360   12.44 12.13     ~ 8 0
44 UCAC4 443-054830 Pe* 11 27 03.6465199484 -01 33 47.233067054   13.047 12.319 12.358   ~ 1 0
45 UCAC4 460-049209 Pe* 11 37 05.7109865349 +01 58 26.226467449   13.082 12.489 12.483   ~ 2 0
46 BD+33 2133 Pe* 11 37 41.9994302496 +33 05 52.770786540   10.09 9.41     G2 5 0
47 2MASS J11455870+0034031 Pe* 11 45 58.7215836184 +00 34 03.078241074           ~ 3 0
48 UCAC4 461-050105 Pe* 11 50 13.8382773437 +02 07 08.042287664   13.194 12.494 12.346   ~ 3 0
49 UCAC4 538-052891 Pe* 11 51 38.3391460539 +17 32 06.120400520   12.946 12.414 12.365   ~ 1 0
50 TYC 2526-970-1 Pe* 11 54 26.1189710544 +35 56 05.860115232   12.08 11.53     ~ 1 0
51 BD-00 2513 SB* 11 57 18.9689855520 -01 02 02.052116232   11.975 11.312 11.3 10.468 ~ 15 0
52 UI +36-7 Pe* 12 02 33.1386847224 +35 15 59.451929244   12.18 11.63     F8 4 0
53 UCAC4 632-047712 Pe* 12 11 36.8480439672 +36 16 45.551360869   13.053 12.461 12.433   ~ 6 0
54 TYC 4940-141-1 PM* 12 17 27.7425804408 -01 54 03.467856348   12.35 11.86     ~ 1 0
55 [M60b]+37 276 Pe* 12 36 01.2545949216 +37 12 44.216298144   11.89 11.16     G0 7 0
56 TYC 890-257-1 Pe* 13 06 52.6937692584 +13 16 29.896831416   12.37 11.89     ~ 1 0
57 TYC 1451-331-1 Pe* 13 13 51.9395829024 +16 19 22.677748284   10.75 10.12     G2V 2 0
58 TYC 305-369-1 Pe* 13 18 21.3575420136 +06 10 41.145528864   12.28 11.66     ~ 2 0
59 UCAC4 439-055692 Pe* 13 25 50.7835083249 -02 17 08.581302017   13.056 12.475 12.450   ~ 1 0
60 TYC 307-993-1 Pe* 13 38 37.4239077240 +00 05 48.023550888   12.35 11.45 11.68   ~ 2 0
61 2MASS J13515802+4002269 Pe* 13 51 58.0232209128 +40 02 26.864936268   12.8 12.1 11.8   ~ 10 0
62 TYC 907-746-1 * 14 04 28.4562711768 +13 30 19.055307024   12.15 11.59     ~ 1 0
63 TYC 3034-664-1 Pe* 14 08 05.9133768672 +39 55 43.964555484   11.06 10.67     ~ 4 0
64 TYC 2010-34-1 SB* 14 08 50.8166937384 +27 06 51.945620760   11.64 11.11     ~ 2 0
65 UCAC4 677-054752 Pe* 14 09 40.6694462555 +45 12 16.158409653   12.855 12.355 12.200   ~ 1 0
66 TYC 4976-562-1 Pe* 14 17 28.9171176480 -00 28 00.572916180   12.82 13.51     ~ 2 0
67 TYC 2552-96-1 Pe* 14 19 35.3439401712 +36 34 46.654018824   13.04 12.41 12.2   ~ 4 0
68 UCAC4 650-053633 Pe* 14 20 07.0093263879 +39 53 53.622141150   12.540 12.091 12.033   ~ 1 0
69 LSPM J1422+1643 SB* 14 22 27.9161500848 +16 43 45.754463964   11.67 11.19     ~ 4 0
70 TYC 318-325-1 Pe* 14 23 19.6430893536 +00 32 03.395279832   12.31 11.28     ~ 3 0
71 TYC 911-843-1 Pe* 14 40 13.9049108664 +09 58 35.273028720   12.57 11.82     ~ 2 0
72 TYC 1483-1147-1 Pe* 14 42 32.0761360800 +21 59 18.294714636   12.76 12.52     ~ 1 0
73 UCAC4 500-061989 Pe* 14 45 06.0616066393 +09 50 26.900724289   12.872 12.235 12.184   ~ 1 0
74 UCAC4 518-057682 PM* 14 58 56.0089413700 +13 31 27.706449339   12.919 12.255 12.117   ~ 1 0
75 TYC 3045-975-1 Pe* 15 09 31.3742577456 +39 35 35.577906036   11.76 11.08     ~ 2 0
76 UCAC4 630-050024 Pe* 15 13 00.7445672413 +35 58 32.609985149   12.731 12.053 12.026   ~ 1 0
77 BD+33 2560 Pe* 15 14 26.1845599776 +33 00 38.275996248   11.5   10.1   G3 43 1
78 UCAC4 628-051170 Pe* 15 46 21.9109700617 +35 31 30.538463427   12.351 11.697 11.641   ~ 2 0
79 Wolf 615 Pe* 15 58 18.6154199664 +02 03 06.102568584   11.41   10.3   ~ 39 0
80 TYC 3067-656-1 Pe* 16 09 42.9836079792 +43 43 57.503696232   12.99 12.34     ~ 4 0
81 TYC 375-293-1 * 16 13 20.0366913792 +05 15 20.869217568   12.51 11.60     ~ 1 0
82 UCAC4 626-052753 Pe* 16 19 26.9561156991 +35 07 00.150522743   12.680 12.106 12.011   ~ 1 0
83 UCAC4 535-060493 Pe* 16 30 20.7917506303 +16 51 24.694128385   13.048 12.265 12.238   ~ 1 0
84 TYC 1523-1076-1 SB* 16 34 30.8136133416 +17 36 19.215246636   11.97 11.59     ~ 2 0
85 TYC 979-1857-1 Pe* 16 57 51.3257950392 +10 47 11.152989420   12.27 11.64     ~ 1 0
86 TYC 3507-966-1 Pe* 17 07 01.9260186240 +51 22 25.744870596   12.55 12.14     ~ 4 0
87 TYC 990-614-1 Pe* 17 14 05.3353042416 +14 07 17.087549304   10.90 10.28     ~ 1 0
88 TYC 3892-429-1 Pe* 17 20 16.9726492320 +54 40 06.031322220   11.846 11.024 10.903   ~ 1 0
89 UCAC4 548-063945 Pe* 17 43 36.1743414131 +19 26 07.157124479   13.009 12.481 12.305   ~ 1 0
90 BD+42 3187 RG* 18 54 16.9544655840 +42 59 00.384912816   10.495 9.939 10.086   G2 101 0
91 TYC 3551-71-1 Pe* 19 26 31.9738693704 +49 04 14.203221708   12.81 12.13     ~ 9 0
92 UCAC4 664-076699 Pe* 19 35 09.0135489553 +42 36 42.628896674   12.995 12.499 12.291   ~ 2 0
93 UCAC4 698-071614 Pe* 19 45 14.6112389040 +49 29 57.017023583   13.100 12.463 12.289   ~ 5 0
94 TYC 1615-410-1 Pe* 19 49 53.1218798904 +15 07 04.108566252   12.23 11.39     ~ 1 0
95 UCAC4 518-138391 Pe* 21 12 46.8019389746 +13 31 35.323804853   12.313 11.644 11.547   ~ 1 0
96 AG+28 2521 Pe* 21 40 06.0047864424 +28 50 36.425427036   11.51 10.95     F8 3 0
97 LSPM J2200+0536 Pe* 22 00 04.6691882640 +05 36 40.381613280       10.7   ~ 2 0
98 TYC 1164-372-1 Pe* 23 15 37.4570690328 +11 13 55.617356208   12.01 12.00     ~ 1 0
99 UCAC4 538-151948 Pe* 23 19 21.5856140047 +17 32 59.644490123   12.641 11.989 11.944   ~ 1 0
100 TYC 1722-181-1 Pe* 23 57 39.0023859144 +15 53 25.145626812   12.17 11.64     ~ 1 0
101 TYC 3237-654-1 * 23 59 13.0375865160 +40 46 43.843749708   12.15 11.80     ~ 1 0

To bookmark this query, right click on this link: simbad:objects in 2023ApJ...944...47G and select 'bookmark this link' or equivalent in the popup menu